Question 9, 6.1.36-T HW Score: 56%, 8.4 of 15 = Homework: MSL #8 Part 1 of 4 points O Points: 0 of 1 Save You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 39 business days, the mean closing price of a certain stock was $120.18. Assume the population standard deviation is $10.11. . . . The 90% confidence interval is (,). (Round to two decimal places as needed.)